1. Ben Press and Theodor Marcu FRS 106 2017
Clutch and Oil Lines
Ben Press and Theodor Marcu
FRS

2. What does a clutch do?
Simply put, the clutch serves as the link between the engine and the transmission.
Composed of friction plates and smooth steel plates (driven plates) housed within a clutch basket and affixed to a rotating shaft
User operates a clutch lever on the handlebar to engage clutch rod to push out the pressure plate, creating space between the friction and steel disks and breaking the contact between the two-- breaks link between trans and engine
Is a slip clutch-- serves as the “weakest link”

3. Expanded Clutch Design
Parts 1-6 comprise clutch backplate/shock absorber
The sprocket (11) connects to duplex chain and transmission input shaft
Houses three pairs of driven/friction plates
Covered by pressure plate that holds continuous pressure through 3 springs
Not pictured: pushrod

4. Potential Clutch Issues
Worn plates could lead to undue slippage
Poor connection (frayed cable) means clutch may not engage
Poorly compressed springs mean clutch may not engage or disengage
Bad bearings mean clutch may not be spinning with drive shaft
Grit and grime in clutch can wear components down
Worn sprocket and/or duplex chain may mean bad connection with transmission input shaft
Missing parts (i.e. key and tab washer)-- gumption trap!

5. The Clutch and Duplex Chain
The clutch on Day 1.
Rusty
Bad Duplex Chain - It was scraping the case.
Springs incomplete or in bad shape

6. What we did: Cleaned all the parts using Yield and the Orange Bath
Found a replacement for the backplate/shock absorber assembly
Found new springs and nuts/clutch pins
Reconditioned the duplex chain
Replacement of clutch plates
Reassembly and ensuring that the springs are properly compressed

7. Clutch Artifacts
Backplate assembly: has rubber parts that protect against internal shocks between the rotor and the plates.
Severely degraded in condition, so we dissected it- usually assembled as an entire unit

8. The Reconditioned Clutch
All the pieces are clean and ready to be assembled!

9. Oil Lines

10. Theory and Design of Oil Lines

11. What do oil lines do?
Circulate motor oil throughout the engine for two purposes: redistributing heat and lubricating parts.
System composed of few main components:
Oil lines- metal
Oil reservoir (tank)
Oil pump
Filter
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